Photoproduction of $\mth{\eta}$ and $\mth{\eta^\prime}$ mesons off nucleons close to threshold

B. Borasoy

doi:doi:10.1007/s100500070059

EPJ

Photoproduction of $\mathsf\eta$ and $\mathsf\eta^\prime$ mesons off nucleons close to threshold

B. Borasoy ¹

Physik Department, Technische Universität München, D-85747 Garching, Germany

Received: 17 March 2000
Communicated by A. Schaefer

Abstract
The importance of Born terms and resonance exchange for $\mathsf\eta$ and $\mathsf\eta^\prime$ photoproduction off both the proton and neutron within U(3) baryon chiral perturbation theory is investigated. Low-lying resonances such as the vector mesons and J^P= 1/2⁺, 1/2^- baryon resonances are included explicitly and their contributions together with the Born terms are calculated. The coupling constants of the resonances are determined from strong and radiative decays. We obtain reasonable agreement with experimental data near threshold.

PACS
12.39.Fe Chiral Lagrangians - 13.60.Le Meson production

23rd International Summer School on Vacuum, Electron, and Ion Technologies (VEIT)
18-22 September 2023
Sozopol, Bulgaria

EPJ

Photoproduction of and mesons off nucleons close to threshold

Conference announcements

Photoproduction of $\mathsf\eta$ and $\mathsf\eta^\prime$ mesons off nucleons close to threshold